[Outages-discussion] [EXTERNAL] Re: Spam from Dymaxion?

Wed Jul 3 17:26:49 EDT 2019

3 emails per hour is too low.  This could cut off some legitimate conversation.  

I did some RTT tests with outages at outages.org with the admins a few weeks ago.  The average RTT for this listserv, when there isn't a broadcast storm, is about 45 seconds.  The Dymaxion ticketing system was generating about 2 emails a minute.  

I think 5 emails from the same sender within 10 minutes would catch every instance of "Sorcerer's Apprentice" broomsticks gone amok, while preserving legitimate exchange between parties (even if those replies are minutes apart).

On 7/3/19, 1:52 PM, "Outages-discussion on behalf of Jimmy Hess" <outages-discussion-bounces at outages.org on behalf of mysidia at gmail.com> wrote:

    A bit wild there.

    I would suggest having  some kind of post rate limit, as in...
    3 Posts per Sender  E-mail Address per Hour,   or something
    like that, and do bounce any messages above that limit,
    then if some random ticket system does get through: at least it will
    not be able to flood and respond to itself on the same mailing list.

    Small quota: adequate to report an outage or send information,
    but since the list is not for discussion,  no legit reason should be
    able to exist for a single poster to ever be sending a "bunch"
    of posts to outages@ in a short timeframe.

    The automated posts could then be "dealt with" as a non-emergency,
    since they would quickly shut themselves off by hitting rate limit.

    I suppose remains unimplemented for mailman
    https://gitlab.com/mailman/mailman/issues/119

    But could likely be enforced at a SMTP service software policy layer,
    for example  an exim script or  postfix policyd  Sender Quota.

    Just a thought...

    Best regards,

    On Tue, Jul 2, 2019 at 4:32 PM Jay R. Ashworth <jra at baylink.com> wrote:
    > Entirely accidental, I assure you.
    > -- j
    > ----- Original Message -----
    ...
    --
    -JH
    _______________________________________________
    Outages-discussion mailing list
    Outages-discussion at outages.org
    https://puck.nether.net/mailman/listinfo/outages-discussion